First, my couch has to be the best place to watch Alias ever. And as I was lounging on my couch last night, perusing episode 4.05 "Welcome to Liberty Village," I came across an interesting tidbit of information. In the episode, Sydney and Vaughn go into deep cover as two Czech terrorists auditioning for a spot in the October Contingent, a radical group of Russian ex-patriots. Jack contacts Alexi, one of Irina's commanding officers when she was with the KGB, to gather information about the location of Liberty Village, the trqining ground for the group. In return, Alexi asks for Irina's books, the books Jack bought her as gifts from a small bookstore in Prague when they were married. Jack, suspicious as to why Alexi would want the books now, has Marshall analyze them for any hidden information. Encoded in an ink dot is code namename "sentinel." When Marshall asks about the significance ocode namedename, Jack brushes him off, offering that it was the name of a murdered CIA operative. But, Jack goes to Sloane with the information. Jack states, "The Russians are looking for Elena Derevko." And Sloane returns, "We must move up our time table."
I did a little research on the word "sentinel." The term has several meanings. A sentinel is one that keeps guard or is posted as a guard. But more interesting is this definition: "being an individual or part of a population potentially susceptible to an infection or infestation." AH HA! Was Elena not in control of a massive world take-over involving contaminated water and zombie-like mind altering? Was not the entire city of Svogda representative of a sentinel? Gosh, I love Alias and all its mystery and I love my couch!